CVE-2026-49098
published 2026-07-06CVE-2026-49098: Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel…
PriorityP334medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.39%
30.8th percentile
Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component.
The camel-kafka producer can override its configured target topic at runtime from the kafka.OVERRIDE_TOPIC Exchange header: KafkaProducer.evaluateTopic() returns the header value in preference to the topic configured on the endpoint. The control-header constants in KafkaConstants (for example OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka.PARTITION_KEY) used plain, non-Camel-prefixed values. camel-kafka's own KafkaHeaderFilterStrategy does filter the kafka.* namespace, but only on the Kafka-to-Exchange serialization boundary (reading Kafka record headers into the Exchange, and writing Exchange headers into a Kafka record); it does not apply to headers that arrive from an upstream consumer in a multi-component route. The upstream HTTP consumer uses HttpHeaderFilterStrategy, which blocks only the Camel / camel namespace, so a kafka.* header passes through unfiltered. As a result, in a route that bridges an HTTP consumer (for example platform-http) into a kafka: producer, any HTTP client could set the kafka.OVERRIDE_TOPIC header and cause the message to be published to an arbitrary Kafka topic instead of the configured one - redirecting it to a sensitive internal topic, or injecting attacker-crafted messages into a topic consumed by a critical downstream service. The related kafka.OVERRIDE_TIMESTAMP and kafka.PARTITION_KEY headers could likewise be injected to backdate messages or target specific partitions. No credentials are required when the bridging consumer is unauthenticated.
This issue affects Apache Camel: from 4.0.0 before 4.14.8, from 4.15.0 before 4.18.3, from 4.19.0 before 4.21.0.
Users are recommended to upgrade to version 4.21.0, which fixes the issue. If users are on the 4.14.x LTS releases stream, then they are suggested
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | camel | >= 4.0.0 < 4.14.8 | 4.14.8 |
| apache | camel | >= 4.15.0 < 4.18.3 | 4.18.3 |
| apache | camel | >= 4.19.0 < 4.21.0 | 4.21.0 |
| apache_software_foundation | apache_camel | >= 4.0.0 < 4.14.8 | 4.14.8 |
| apache_software_foundation | apache_camel | >= 4.15.0 < 4.18.3 | 4.18.3 |
| apache_software_foundation | apache_camel | >= 4.19.0 < 4.21.0 | 4.21.0 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
vendor_redhat5.3MEDIUM
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GHSA
Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component.
ghsa_unreviewed·2026-07-06
CVE-2026-49098 [MEDIUM] CWE-20 Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component.
Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component.
The camel-kafka producer can override its configured target topic at runtime from the kafka.OVERRIDE_TOPIC Exchange header: KafkaProducer.evaluateTopic() returns the header value in preference to the topic configured on the endpoint. The control-header constants in KafkaConstants (for example OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka.PARTITION_KEY) used plain, non-Camel-prefixed values. camel-kafka's own KafkaHeaderFilterStrategy does filter the kafka.* namespace, but only on the Kafka-to-Exchange serialization boundary (reading Kafka record headers into
VulDB
Apache Camel up to 4.14.8/4.18.2/4.20.x Camel-Kafka redirect
vuldb·2026-07-05
CVE-2026-49098 [LOW] Apache Camel up to 4.14.8/4.18.2/4.20.x Camel-Kafka redirect
A vulnerability classified as problematic has been found in Apache Camel up to 4.14.8/4.18.2/4.20.x. This affects an unknown function of the component Camel-Kafka. This manipulation causes open redirect.
This vulnerability is tracked as CVE-2026-49098. The attack is possible to be carried out remotely. No exploit exists.
It is recommended to upgrade the affected component.
Red Hat
camel-kafka: Apache Camel Kafka Component: Message redirection and injection via header manipulation
vendor_redhat·2026-07-06·CVSS 5.3
CVE-2026-49098 [MEDIUM] CWE-20 camel-kafka: Apache Camel Kafka Component: Message redirection and injection via header manipulation
camel-kafka: Apache Camel Kafka Component: Message redirection and injection via header manipulation
Improper Input Validation, Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in Apache Camel Kafka Component.
The camel-kafka producer can override its configured target topic at runtime from the kafka.OVERRIDE_TOPIC Exchange header: KafkaProducer.evaluateTopic() returns the header value in preference to the topic configured on the endpoint. The control-header constants in KafkaConstants (for example OVERRIDE_TOPIC = kafka.OVERRIDE_TOPIC, OVERRIDE_TIMESTAMP = kafka.OVERRIDE_TIMESTAMP, PARTITION_KEY = kafka.PARTITION_KEY) used plain, non-Camel-prefixed values. camel-kafka's own KafkaHeaderFilterStrategy does filter the kafka.* n
No detection rules found.
No public exploits indexed.
2026-07-06
Published